Zeolitic imidazolate framework-67 in chitosan-grafted hydrogel as an effective catalyst for peroxymonosulfate activation to degrade antibiotics and dyes
Issued Date
2024-11-08
Resource Type
eISSN
20462069
Scopus ID
2-s2.0-85209180914
Journal Title
RSC Advances
Volume
14
Issue
48
Start Page
35628
End Page
35637
Rights Holder(s)
SCOPUS
Bibliographic Citation
RSC Advances Vol.14 No.48 (2024) , 35628-35637
Suggested Citation
Nachaichot A., Phonlakan K., Nijpanich S., Pornsuwan S., Budsombat S. Zeolitic imidazolate framework-67 in chitosan-grafted hydrogel as an effective catalyst for peroxymonosulfate activation to degrade antibiotics and dyes. RSC Advances Vol.14 No.48 (2024) , 35628-35637. 35637. doi:10.1039/d4ra06537a Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/102145
Title
Zeolitic imidazolate framework-67 in chitosan-grafted hydrogel as an effective catalyst for peroxymonosulfate activation to degrade antibiotics and dyes
Corresponding Author(s)
Other Contributor(s)
Abstract
Zeolitic imidazolate framework-67 (ZIF-67) was synthesized in situ in the hydrogel of chitosan-grafted poly(acrylic acid) (chitosan-g-PAA) to activate peroxymonosulfate (PMS) and degrade tetracycline (TC). The catalytic performance of the composite hydrogel for TC degradation was evaluated under different conditions. The results showed rapid degradation, with enhanced degradation efficiency as the catalyst dosage, PMS dosage, and temperature increased. TC was degraded entirely within 30 min for catalyst and PMS dosages of 1 and 1 g per L, respectively. The composite hydrogel was effective across a broad pH range. A scavenging study and electron paramagnetic resonance experiments indicated that SO4˙−, HO˙, O2˙− and 1O2 were involved in the degradation process. The antibacterial test against E. coli showed that the products of the TC degradation were nontoxic. Additionally, the composite hydrogel was evaluated in the presence of anions and in real water samples. The reusability study showed that the composite hydrogel could be recovered through filtration and effectively used for five consecutive cycles. Moreover, the composite hydrogel could degrade 82% ciprofloxacin and 86% norfloxacin, while it could completely degrade rhodamine B, reactive red 141, and methylene blue dyes within 30 min.